Results 131 to 140 of about 33,101 (301)

Polychlorinated biphenyls and polybrominated biphenyls [PDF]

, 2001
openaire   +2 more sources

A Two-dimensional Reaction Gas Chromatography System for Isomer-specific Determination of Polychlorinated Biphenyls

, 1989
A two-dimensional capillary gas chromatographic system is described. Application of the system for confirmatory analysis of polychlorinated biphenyls is demonstrated. A two-dimensional capillary gas chromatographic system is described. Application of the
Yanders, A. F., Clevenger, Tom E., Kapila, Shubhender, Manahan, Stanley E., Duebelbeis, Dennis O.   +4 more
core   +1 more source

Acid‐Catalyzed Rearrangement Reaction for Single‐Molecule Junction Formation

Chemistry – A European Journal, EarlyView.
Hydrazobenzenes cannot form single‐molecule devices with gold electrodes in a nonpolar solvent, but with the addition of trifluoroacetic acid, robust single‐molecule junctions are created. Hydrazobenzenes likely undergo rearrangement reactions to form benzidines, which are then attached to gold contacts by dative NH2→Au interactions for junction ...
Yihao Zhang, Yunlong Li, Zhenpin Lu, Haixing Li   +3 more
wiley   +1 more source

Synergistic Action of Ascorbic Acid and Readily Accessible NHC^N Ligands for the Oxidation of Gold(I) With Electron‐Rich Aryldiazonium Salts

Chemistry – A European Journal, EarlyView.
The synergic action of ascorbic acid and NHC^N ligands enables Au(I) oxidation with electron‐rich aryldiazonium salts. ABSTRACT The synergistic action of ascorbic acid and NHC^N ligands enables the challenging oxidation of Au(I) with electron‐rich aryldiazonium salts in the absence of a cocatalyst and/or irradiation. EPR, NMR, and x‐ray analyses reveal
Paula G. Cárdenas‐Cárdenas, Diego Dusso, Saúl Soto‐Zúñiga, Osvaldo F. López‐Saladino, Simón Hernández‐Ortega, Rubén A. Toscano, Virginia Gómez‐Vidales, Susana Porcel‐García   +7 more
wiley   +1 more source

The toxicology of polychlorinated biphenyls [PDF]

, 2012
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmacology & Toxicology Radka Janušová Supervisor: PharmDr. Marie Vopršalová, CSc.
Janušová, Radka
core  

Diastereoselective Copper‐Catalyzed Defluorosilylation of Pentafluoroethyl Alkenes to Access Polyfluorinated Allylsilanes

Chinese Journal of Chemistry, EarlyView.
Under copper(I) catalysis, pentafluoroethylated alkenes can undergo smooth defluorosilylation to generate novel polyfluorinated products. The reaction exhibits high levels of diastereoselectivities for obtaining multisubstituted allylsilanes with control of the double bond geometry.
Yuwei Zong, Yihan Tang, Gavin Chit Tsui
wiley   +1 more source

Post‐Synthetic Bimetallic Assembly of 2D CoFe‐MOF Composite as an Electrocatalyst for the Oxygen Evolution Reaction

CleanMat, EarlyView.
Post‐synthetic bimetallic assembly constructs a 2D CoFe‐MOF composite. DFT confirms Fe→O→Co synergy optimizes the OER pathway (ΔGmax = 1.67 eV), leading to ultralow overpotential (290 mV) and robust stability. ABSTRACT Metal‐organic frameworks (MOFs) are promising oxygen evolution reaction (OER) electrocatalysts, yet their commercial viability is ...
Baiming Liang, Manqi Liu, Yuan Li, Xiaolin Wu, Hongjie Zou, Wenzhen Liu, Taishan Li, Jiawen Zhang, Zhikuan Wang, Yuxuan Lin, Chongxiong Duan, Bangyun Xiong   +11 more
wiley   +1 more source

Determination of polychlorinated biphenyls in the oils and fats

, 2014
Показана актуальность определения ПХБ в маслах и жирах. Показана актуальность определения ПХБ в маслах и жирах. Обоснована необходимость решения проблемы канцерогенной безопасности масложирових и жиросодержащих пищевых продуктах с надежным контролем ...
Левчук, І. В.
core  

Identification and Characterization of the Designer Opioid N‐Pyrrolidino Fluetonitazene in Nasal Spray

Drug Testing and Analysis, EarlyView.
N‐Pyrrolidino fluetonitazene, a synthetic opioid, was identified and characterized in a nasal spray using GC‐MS, LC‐QTOF‐MS, NMR and FT‐IR. ABSTRACT Detection of drugs in non‐biological samples serves as a fundamental basis for identifying emerging trends in the field of new psychoactive substances and provides valuable information for optimizing ...
Fabian Picht, Valentin Cepus, Rona Hohlfeld, Julian Klingbeil, Marco Weber   +4 more
wiley   +1 more source

Phase I Metabolism of Novel Phencyclidine Derivative 3‐Cl‐PCP: In Vitro Studies With Pooled Human Liver Microsomes and Investigation of a Post‐Mortem Case

Drug Testing and Analysis, EarlyView.
A fatal 3‐chloro‐phencyclidine (3‐Cl‐PCP) intoxication was investigated by analyzing postmortem samples and a pooled human liver microsomes assay. Tentative metabolite identification was performed by liquid chromatography‐quadrupole time‐of‐flight mass spectrometry (LC‐QTOF‐MS). Seven phase I metabolites were identified.
Johannes Kutzler, Tobias Veit, Thomas Keller, Volker Auwärter   +3 more
wiley   +1 more source